MAX1771ESA+T Step-Up DC-DC Controller

The MAX1771ESA+T from Maxim Integrated is a high-efficiency, step-up DC-DC controller that is designed to provide a compact and flexible solution for power supply applications. This controller operates from a 2V to 16.5V input voltage range, making it suitable for a variety of battery-powered devices, as well as for standard 5V or 12V power rails.

One of the key features of the MAX1771ESA+T is its ability to deliver an adjustable output voltage up to 28V, which can be set using two external resistors. This versatility makes it an ideal choice for applications that require a specific voltage level that is not commonly available from fixed-output regulators.

The device uses a pulse-frequency modulation (PFM) control scheme to achieve high efficiency over a wide range of load conditions. This control method helps to reduce power losses and improve battery life in portable applications. The MAX1771ESA+T also integrates a unique current-limited, pulse-frequency-modulated (PFM) control scheme that combines the benefits of traditional PFM and pulse-width modulation (PWM) for optimized performance.

For enhanced safety and reliability, the MAX1771ESA+T features an on-chip thermal shutdown mechanism that protects the device from overheating. It also includes a soft-start function to minimize inrush current during startup, which helps prevent damage to the power source and other circuit components.

The MAX1771ESA+T comes in a compact 8-pin SO package, which is suitable for space-constrained applications. It is also available in a tape and reel format, denoted by the '+T' suffix, making it ideal for automated manufacturing processes.

Applications for the MAX1771ESA+T include LCD bias supplies, DSL modems, portable computers, and other portable devices that require a high-voltage supply generated from a low-voltage source. Its high efficiency and adjustable output make it a versatile choice for designers looking to optimize power management in their products.

In summary, the MAX1771ESA+T from Maxim Integrated is a robust and flexible step-up DC-DC controller that provides designers with a high-efficiency solution for a wide range of power supply applications.